Berlin Abgeordnetenhaus Election (20 September 2026): Bündnis 90/Die Grünen achieve more than 14.0% of votes cast (confirmed by Berlin Landeswahlleiter or tagesschau.de by 21 September 2026)
Pending
✦ AI-generated prediction
Published on 9. September 2026
·
Predicted for 20. September 2026
·
Based on: Statistical Pattern
PolitPro Trend Berlin (8 Sep 2026): Grüne 16.1%. INSA poll (4 Sep 2026): 15%. The Berlin Greens have clearly recovered from their 2023 slump (9.4%) and are stable at 15–16%. Both current surveys sit well above the 14.0% threshold. BSW polls at only 3.6% (PolitPro) and is unlikely to enter parliament. Standard poll uncertainty discount gives 76%.
Data basis for this prediction
- PolitPro Election Trend Berlin: Grüne 16,1 % (8. September 2026)
- INSA / dawum.de: Abgeordnetenhauswahl Berlin – Grüne 15 %, BSW 3 % (4. September 2026)
Verdict: Pending
This prediction is still open. It will be evaluated automatically against real-world sources after its due date.
🏛️ Politics
✦ AI
The SPD received exactly 18.4% in the 2023 Berlin state election and has since been in opposition. Current polls (August/September 2026) put the SPD at 19–22%, making a result above 18.0% likely. Headwinds: ongoing federal political controversy and competition from BSW (which, per existing prediction, is expected below 5%). The 18.0% threshold is just below the 2023 result and would only be missed in a dramatic collapse. No Polymarket market; Metaculus aggregate implies ~65% for SPD above 18%.
🏛️ Politics
✦ AI
Both current Berlin polls place the FDP far below the 5% threshold: INSA (Sept 2–4, 2026): 3.0%; Infratest dimap (Aug 27–31, 2026): FDP below the statistical detectable threshold. The Berlin FDP has not reached the 5% mark in any poll since spring 2026. Clearing the hurdle would require a simultaneous systematic error of 2+ points from both institutes — historically near-unprecedented. This is the highest-confidence prediction of the entire Berlin election.
🏛️ Politics
✦ AI
Current polls show Liberalerna well below the 4% threshold: Indikator Opinion (fieldwork to September 4, 2026): 2.2%; PolitPro election trend (as of September 9, 2026): 2.7%. Neither institute identifies meaningful upward momentum. The party was part of the Tidö coalition but suffered from its image problems. Even with maximum systematic polling error of +1.5 points, Liberalerna would remain below 4.2%. Failing to enter the Riksdag would cost the governing coalition its parliamentary majority.